What is the role of the suspensory ligament in a horse's leg?

The suspensory ligament plays a crucial role in a horse's leg by preventing overextension of the fetlock joint. This ligament is a key component of the equine limb's support system, running from the back of the cannon bone down to the sesamoid bones located just above the fetlock joint. During activities such as running, jumping, or turning, the suspensory ligament helps absorb shock and stabilize the fetlock, allowing the horse to maintain proper leg function and preventing excessive downward movement of the joint. By doing so, it protects the delicate structures of the lower leg and contributes to the overall biomechanics of the horse's movement, reducing the risk of injury.

Other options highlight different anatomical structures or functions that are not related to the specific role of the suspensory ligament. The knee support is primarily provided by other ligaments such as the collateral and cruciate ligaments, while the shoulder flexion is managed by muscles and tendons that are distinct from the suspensory ligament. Connecting the hoof to the leg is accomplished by the laminae and other structures, which are quite different from the suspensory ligament's function. Understanding the importance of the suspensory ligament can help in assessing injuries and maintaining the health of equ